Special thanks to the following individuals who contributed photographs for this presentation: Hugh and Carol Nourse, Ed McDowell, Michael Strickland, Chris Evans, Tim Grissom, Guy Anglin, Matthew Chappell, Steve Sanchez, Theresa Schrum, Robert Westerfield, Shirley Denton, Wendy VanDyk Evans, David Moorhead, Fred Mileshko, John Ruter, Michael Dirr, and Ernest Koone.
Thanks is also expressed to the USDA Plants website at:
http://plants.usda.gov/
which provided the distribution maps in this presentation